Submission

Score: 100

User: thanakorn

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.005 second

Submitted On: 2026-09-26 11:17:56

#include<iostream>
using namespace std;

int main(){
	string n;
	cin>>n;
	int ct[26]={0};
	for(int i=0;i<n.length();i++){
		ct[(int)n[i]-'A']++;
	}
	for(int i=0;i<25;i++){
		if(ct[i]==1){
			cout<<(char)('A'+i);
			return 0;
		}
	}
}